If you are looking to download the user’s manual of an electronic product that you own but it is nowhere to be found on the manufacturer’s website, you might as well try a search on Amazon.com.
The site hosts PDF manuals of thousands of electronic products including those of items that have either been discontinued or are no longer available for sale on Amazon.com.
The user manuals are primarily hosted on two Amazon servers – images-amazon.com and ssl-images-amazon.com – and here’s how you can find the one you are looking for.
Go to Google and type the following query. Replace the word PRODUCT with actual name of your product
PRODUCT filetype:pdf site:ssl-images-amazon.com OR site:images-amazon.com